[CE->EE] fix log_failed_login method

We added the same method in CE side

ee/app/controllers/ee/sessions_controller.rb

@@ -3,12 +3,12 @@ module EE
     extend ActiveSupport::Concern
 
     prepended do
-      after_action :log_failed_login, only: :new, if: :failed_login?
+      after_action :log_failed_login_ee, only: :new, if: :failed_login?
     end
 
     private
 
-    def log_failed_login
+    def log_failed_login_ee
       ::AuditEventService.new(request.filtered_parameters['user']['login'], nil, ip_address: request.remote_ip)
           .for_failed_login.unauth_security_event
     end